Which type of selection is driven by humans for breeding of useful traits from natural variation among organisms?

Which type of selection is driven by humans for breeding of useful traits from natural variation among organisms?

• A. Artificial Selection
• B. Natural Selection
• C. Sexual Selection
• D. Stabilizing Selection

Answer: (A)

Humans guiding breeding by selecting individuals with desirable traits is artificial selection. It starts from the natural variation that already exists in a population, and people choose which organisms to mate based on traits they value—things like sweeter fruit, higher milk production, or calmer temperaments. By repeatedly selecting and breeding those individuals, the frequency of the associated traits increases over generations, shifting the population toward the desired characteristics. This differs from natural selection, where environmental pressures determine which individuals survive and reproduce, with no human intervention. Sexual selection focuses on traits that improve mating success, which might not be useful for practical breeding. Stabilizing selection favors average traits and reduces variation due to natural environmental pressures, not deliberate human design.

Humans guiding breeding by selecting individuals with desirable traits is artificial selection. It starts from the natural variation that already exists in a population, and people choose which organisms to mate based on traits they value—things like sweeter fruit, higher milk production, or calmer temperaments. By repeatedly selecting and breeding those individuals, the frequency of the associated traits increases over generations, shifting the population toward the desired characteristics.

This differs from natural selection, where environmental pressures determine which individuals survive and reproduce, with no human intervention. Sexual selection focuses on traits that improve mating success, which might not be useful for practical breeding. Stabilizing selection favors average traits and reduces variation due to natural environmental pressures, not deliberate human design.